The phrase "are strongly implicated" is correct and usable in written English.
It can be used in contexts where you want to indicate that certain factors or individuals are significantly involved or connected to a particular situation or outcome.
Example: "The researchers found that several environmental factors are strongly implicated in the rise of respiratory diseases in urban areas."
Alternatives: "are significantly involved" or "are deeply connected".
Oestrogen and other hormones are strongly implicated in breast cancer, and both pregnancy and breastfeeding suppress ovulation, thus reducing the amount of circulating hormones.
Biofilms are surface-bound communities of microbial cells found in oligotrophic environments and are strongly implicated in bacterial virulence [55,85].
Oxidative stress and generation of reactive oxygen species are strongly implicated in a number of neuronal and neuromuscular disorders, including epilepsy.
MicroRNAs (miRNAs) are strongly implicated in the global regulation of gene expression, and, in this regard, they consequently affect metabolic pathways on every regulatory level in different species.
The basal ganglia are strongly implicated in reinforcement learning, and in all behavior and cognition over which the frontal lobes exert flexible control.
Glutamatergic processes are strongly implicated in the pathophysiology and treatment of depression, including the antidepressant effects of N-methyl-d-aspartate (NMDA) receptor antagonists.
Face-selective regions in the amygdala and posterior superior temporal sulcus (pSTS) are strongly implicated in the processing of transient facial signals, such as expression.
Rnd proteins are strongly implicated as modulators of the actin cytoskeleton dynamics in cultured cells [22].
Electropositive patches at the concave BAR dimer surface are strongly implicated in membrane binding in vitro.
The CCCH genes with dynamic expression changes across the time course of macrophage activation are strongly implicated in the regulation of the critical process.
A previous study also indicated that extracellular signals induced by VEGF-A are strongly implicated in EMT in human pancreatic carcinoma cells [37].
